5BACAC 10 BCBCB
11~15 ABCAB 16~20 ACABC
21~25 CDADB 26~30 ADBAB
31~35 DCBCA 36~40 BDCAB
41~45 ADCDB 46~50 ACBDA
51~55CDBCC 56~60 ABCAB
61~65 CDCBB 66~70 CBBAB
71.admits making a mistake
72.is being decorated
73.it wasnot until dark
74.had he experienced
75how excited we were
76.add up
77.no matter howhard
78.be dealt with
79twice as many books
80.has been changed.给分吧!打的累死了